4. Solve by completing the square. x^2-6x-2=0 - id4262011520340, alexisthegirl

Ответ:

locomexicano03

26.02.2021

Mathematics

X= -1

Step-by-step explanation:

•Remember PEMDAS

•exponents: X^2

•Square root/x^2-6x-2

= x-2.4x-1.4=0

•Add 1.4 to 0

x-2.4x=1.4

•Combine like terms

-1.4x=1.4

•divide by -1.4 on each side to get x by itself

-1.4x/-1.4= 1.4/-1.4

X=-1

0,0(0 оценок)

Ответ:

ciaralamont2

22.06.2020

Mathematics

$3^{4x-5}=\left(\dfrac{1}{27}\right)^{2x+10}\\\\3^{4x-5}=\left(\dfrac{1}{3^3}\right)^{2x+10}\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}\\\\3^{4x-5}=\left(3^{-3}\right)^{2x+10}\qquad\text{use}\ (a^n)^m=a^{n\cdot m}\\\\3^{4x-5}=3^{-3(2x+10)}\qquad\text{use distributive property}\\\\3^{4x-5}=3^{(-3)(2x)+(-3)(10)}\\\\3^{4x-5}=3^{-6x-30}\iff4x-5=-6x-30\qquad\text{add 5 to both sides}\\\\4x=-6x-25\qquad\text{add 6x to both sides}\\\\10x=-25\qquad\text{divide both sides by 10}\\\\\boxed{x=-2.5}$

0,0(0 оценок)

4. Solve by completing the square.
x^2-6x-2=0
The solutions are x =

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question

4. Solve by completing the square. x^2-6x-2=0 The solutions are x =

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question

4. Solve by completing the square.
x^2-6x-2=0
The solutions are x =